using System;
using System.Collections.Generic;
using Server.Network;
using Server.Targeting;

namespace Server.Items
{
  public class CrystalRechargeInfo
  {
    public static readonly CrystalRechargeInfo[] Table =
    {
      new CrystalRechargeInfo(typeof(Citrine), 500),
      new CrystalRechargeInfo(typeof(Amber), 500),
      new CrystalRechargeInfo(typeof(Tourmaline), 750),
      new CrystalRechargeInfo(typeof(Emerald), 1000),
      new CrystalRechargeInfo(typeof(Sapphire), 1000),
      new CrystalRechargeInfo(typeof(Amethyst), 1000),
      new CrystalRechargeInfo(typeof(StarSapphire), 1250),
      new CrystalRechargeInfo(typeof(Diamond), 2000)
    };

    private CrystalRechargeInfo(Type type, int amount)
    {
      Type = type;
      Amount = amount;
    }

    public Type Type{ get; }

    public int Amount{ get; }

    public static CrystalRechargeInfo Get(Type type)
    {
      foreach (CrystalRechargeInfo info in Table)
        if (info.Type == type)
          return info;

      return null;
    }
  }

  public class BroadcastCrystal : Item
  {
    public static readonly int MaxCharges = 2000;

    private int m_Charges;

    [Constructible]
    public BroadcastCrystal(int charges = 2000) : base(0x1ED0)
    {
      Light = LightType.Circle150;

      m_Charges = charges;

      Receivers = new List<ReceiverCrystal>();
    }

    public BroadcastCrystal(Serial serial) : base(serial)
    {
    }

    public override int LabelNumber => 1060740; // communication crystal

    [CommandProperty(AccessLevel.GameMaster)]
    public bool Active
    {
      get => ItemID == 0x1ECD;
      set
      {
        ItemID = value ? 0x1ECD : 0x1ED0;
        InvalidateProperties();
      }
    }

    [CommandProperty(AccessLevel.GameMaster)]
    public int Charges
    {
      get => m_Charges;
      set
      {
        m_Charges = value;
        InvalidateProperties();
      }
    }

    public List<ReceiverCrystal> Receivers{ get; private set; }

    public override bool HandlesOnSpeech => true;

    public override void GetProperties(ObjectPropertyList list)
    {
      base.GetProperties(list);

      list.Add(Active ? 1060742 : 1060743); // active / inactive
      list.Add(1060745); // broadcast
      list.Add(1060741, Charges.ToString()); // charges: ~1_val~

      if (Receivers.Count > 0)
        list.Add(1060746, Receivers.Count.ToString()); // links: ~1_val~
    }

    public override void OnSingleClick(Mobile from)
    {
      base.OnSingleClick(from);

      LabelTo(from, Active ? 1060742 : 1060743); // active / inactive
      LabelTo(from, 1060745); // broadcast
      LabelTo(from, 1060741, Charges.ToString()); // charges: ~1_val~

      if (Receivers.Count > 0)
        LabelTo(from, 1060746, Receivers.Count.ToString()); // links: ~1_val~
    }

    public override void OnSpeech(SpeechEventArgs e)
    {
      if (!Active || Receivers.Count == 0 || RootParent != null && !(RootParent is Mobile))
        return;

      if (e.Type == MessageType.Emote)
        return;

      Mobile from = e.Mobile;
      string speech = e.Speech;

      foreach (ReceiverCrystal receiver in new List<ReceiverCrystal>(Receivers))
        if (receiver.Deleted)
        {
          Receivers.Remove(receiver);
        }
        else if (Charges > 0)
        {
          receiver.TransmitMessage(from, speech);
          Charges--;
        }
        else
        {
          Active = false;
          break;
        }
    }

    public override void OnDoubleClick(Mobile from)
    {
      if (!from.InRange(GetWorldLocation(), 2))
      {
        from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
        return;
      }

      from.Target = new InternalTarget(this);
    }

    public override void Serialize(GenericWriter writer)
    {
      base.Serialize(writer);

      writer.WriteEncodedInt(0); // version

      writer.WriteEncodedInt(m_Charges);
      writer.WriteItemList(Receivers);
    }

    public override void Deserialize(GenericReader reader)
    {
      base.Deserialize(reader);

      int version = reader.ReadEncodedInt();

      m_Charges = reader.ReadEncodedInt();
      Receivers = reader.ReadStrongItemList<ReceiverCrystal>();
    }

    private class InternalTarget : Target
    {
      private BroadcastCrystal m_Crystal;

      public InternalTarget(BroadcastCrystal crystal) : base(2, false, TargetFlags.None)
      {
        m_Crystal = crystal;
      }

      protected override void OnTarget(Mobile from, object targeted)
      {
        if (!m_Crystal.IsAccessibleTo(from))
          return;

        if (from.Map != m_Crystal.Map || !from.InRange(m_Crystal.GetWorldLocation(), 2))
        {
          from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
          return;
        }

        if (targeted == m_Crystal)
        {
          if (m_Crystal.Active)
          {
            m_Crystal.Active = false;
            from.SendLocalizedMessage(500672); // You turn the crystal off.
          }
          else
          {
            if (m_Crystal.Charges > 0)
            {
              m_Crystal.Active = true;
              from.SendLocalizedMessage(500673); // You turn the crystal on.
            }
            else
            {
              from.SendLocalizedMessage(500676); // This crystal is out of charges.
            }
          }
        }
        else if (targeted is ReceiverCrystal receiver)
        {
          if (m_Crystal.Receivers.Count >= 10)
          {
            from.SendLocalizedMessage(1010042); // This broadcast crystal is already linked to 10 receivers.
          }
          else if (receiver.Sender == m_Crystal)
          {
            from.SendLocalizedMessage(500674); // This crystal is already linked with that crystal.
          }
          else if (receiver.Sender != null)
          {
            from.SendLocalizedMessage(
              1010043); // That receiver crystal is already linked to another broadcast crystal.
          }
          else
          {
            receiver.Sender = m_Crystal;
            from.SendLocalizedMessage(500675); // That crystal has been linked to this crystal.
          }
        }
        else if (targeted == from)
        {
          foreach (ReceiverCrystal rc in new List<ReceiverCrystal>(m_Crystal.Receivers)) rc.Sender = null;

          from.SendLocalizedMessage(1010046); // You unlink the broadcast crystal from all of its receivers.
        }
        else
        {
          if (targeted is Item targItem && targItem.VerifyMove(from))
          {
            CrystalRechargeInfo info = CrystalRechargeInfo.Get(targItem.GetType());

            if (info != null)
            {
              if (m_Crystal.Charges >= MaxCharges)
              {
                from.SendLocalizedMessage(500678); // This crystal is already fully charged.
              }
              else
              {
                targItem.Consume();

                if (m_Crystal.Charges + info.Amount >= MaxCharges)
                {
                  m_Crystal.Charges = MaxCharges;
                  from.SendLocalizedMessage(500679); // You completely recharge the crystal.
                }
                else
                {
                  m_Crystal.Charges += info.Amount;
                  from.SendLocalizedMessage(500680); // You recharge the crystal.
                }
              }

              return;
            }
          }

          from.SendLocalizedMessage(500681); // You cannot use this crystal on that.
        }
      }
    }
  }

  public class ReceiverCrystal : Item
  {
    private BroadcastCrystal m_Sender;

    [Constructible]
    public ReceiverCrystal() : base(0x1ED0)
    {
      Light = LightType.Circle150;
    }

    public ReceiverCrystal(Serial serial) : base(serial)
    {
    }

    public override int LabelNumber => 1060740; // communication crystal

    [CommandProperty(AccessLevel.GameMaster)]
    public bool Active
    {
      get => ItemID == 0x1ED1;
      set
      {
        ItemID = value ? 0x1ED1 : 0x1ED0;
        InvalidateProperties();
      }
    }

    [CommandProperty(AccessLevel.GameMaster)]
    public BroadcastCrystal Sender
    {
      get => m_Sender;
      set
      {
        if (m_Sender != null)
        {
          m_Sender.Receivers.Remove(this);
          m_Sender.InvalidateProperties();
        }

        m_Sender = value;

        if (value != null)
        {
          value.Receivers.Add(this);
          value.InvalidateProperties();
        }
      }
    }

    public override void GetProperties(ObjectPropertyList list)
    {
      base.GetProperties(list);

      list.Add(Active ? 1060742 : 1060743); // active / inactive
      list.Add(1060744); // receiver
    }

    public override void OnSingleClick(Mobile from)
    {
      base.OnSingleClick(from);

      LabelTo(from, Active ? 1060742 : 1060743); // active / inactive
      LabelTo(from, 1060744); // receiver
    }

    public void TransmitMessage(Mobile from, string message)
    {
      if (!Active)
        return;

      string text = $"{from.Name} says {message}";

      if (RootParent is Mobile mobile)
        mobile.SendMessage(0x2B2, "Crystal: " + text);
      else if (RootParent is Item item)
        item.PublicOverheadMessage(MessageType.Regular, 0x2B2, false, "Crystal: " + text);
      else
        PublicOverheadMessage(MessageType.Regular, 0x2B2, false, text);
    }

    public override void OnDoubleClick(Mobile from)
    {
      if (!from.InRange(GetWorldLocation(), 2))
      {
        from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
        return;
      }

      from.Target = new InternalTarget(this);
    }

    public override void Serialize(GenericWriter writer)
    {
      base.Serialize(writer);

      writer.WriteEncodedInt(0); // version

      writer.WriteItem(m_Sender);
    }

    public override void Deserialize(GenericReader reader)
    {
      base.Deserialize(reader);

      int version = reader.ReadEncodedInt();

      m_Sender = reader.ReadItem<BroadcastCrystal>();
    }

    private class InternalTarget : Target
    {
      private ReceiverCrystal m_Crystal;

      public InternalTarget(ReceiverCrystal crystal) : base(-1, false, TargetFlags.None)
      {
        m_Crystal = crystal;
      }

      protected override void OnTarget(Mobile from, object targeted)
      {
        if (!m_Crystal.IsAccessibleTo(from))
          return;

        if (from.Map != m_Crystal.Map || !from.InRange(m_Crystal.GetWorldLocation(), 2))
        {
          from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
          return;
        }

        if (targeted == m_Crystal)
        {
          if (m_Crystal.Active)
          {
            m_Crystal.Active = false;
            from.SendLocalizedMessage(500672); // You turn the crystal off.
          }
          else
          {
            m_Crystal.Active = true;
            from.SendLocalizedMessage(500673); // You turn the crystal on.
          }
        }
        else if (targeted == from)
        {
          if (m_Crystal.Sender != null)
          {
            m_Crystal.Sender = null;
            from.SendLocalizedMessage(1010044); // You unlink the receiver crystal.
          }
          else
          {
            from.SendLocalizedMessage(1010045); // That receiver crystal is not linked.
          }
        }
        else
        {
          if (targeted is Item targItem && targItem.VerifyMove(from))
          {
            CrystalRechargeInfo info = CrystalRechargeInfo.Get(targItem.GetType());

            if (info != null)
            {
              from.SendLocalizedMessage(500677); // This crystal cannot be recharged.
              return;
            }
          }

          from.SendLocalizedMessage(1010045); // That receiver crystal is not linked.
        }
      }
    }
  }
}